97118-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97118-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,1,1 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 97118-21:
(7*9)+(6*7)+(5*1)+(4*1)+(3*8)+(2*2)+(1*1)=143
143 % 10 = 3
So 97118-21-3 is a valid CAS Registry Number.